Similar to the Module Setting for Quiz objects of "Score at least..." x points before that requirement is met, please add "Submit at least x [number of] forum posts" for Discussion objects. In my courses, I often have a required "initial" post and two or three "reply" posts due for discussions. Unfortunately, if "contribute to the page" is used for discussions, a single post credits that requirement as being fully completed. The student sees a Green check mark by that module item in their view, and they sometimes forgets to go back and submit their required replies. Once the discussion is graded and the student has lost points for missing replies, they sometimes tell me that they completely spaced out going back for those because they saw the green check and weren't alerted that they weren't done. Thanks for your consideration on this!